Heel



1.1 is a right perspective view of a heel, showing my new design;

1.2 is a left perspective view thereof;

1.3 is a right view thereof;

1.4 is a left view thereof;

1.5 is a front view thereof;

1.6 is rear view thereof;

1.7 is a top view thereof;

1.8 is a bottom view thereof;

2.1 is a left perspective view of a second embodiment of the heel of view 1.1 , showing my new design;

2.2 is a left view thereof;

2.3 is a right view thereof;

2.4 is a rear view thereof;

2.5 is a front view thereof;

2.6 is top view thereof; and

2.7 is a bottom view thereof.

The broken lines in the drawings showing a boot depict exemplary environment and form no part of the claim. 

CLAIM The ornamental design for a heel, as shown and described. 